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- Title
Drastic cooling rate dependence of thermal anomaly associated with the superconducting transition in k-(BEDT-TTF)<sub>4</sub>Hg<sub>2.89</sub>Br<sub>8</sub>.
- Authors
Yamashita, S.; Naito, A.; Nakazawa, Y.; Saito, K.; Taniguchi, H.; Kanoda, K.; Oguni, M.
- Abstract
Using a thermal relaxation calorimetry technique, we have measured heat capacities of κ-(BEDT-TTF)4Hg2.89Br8 system under magnetic fields between 0 and 6 T. With the increase of cooling rate from room temperature to liquid helium temperature, we have observed a remarkable but systematic tendency that the thermal anomaly associated with the superconductive transition shifts to the lower temperatures. The course of this phenomenon is attributable to the degree of disorder in the mercury chains which give an incommensurate potential to the superconducting planes.
- Subjects
SUPERCONDUCTORS; MERCURY compounds; THERMODYNAMICS; MAGNETIC fields; LIQUID helium
- Publication
Journal of Thermal Analysis & Calorimetry, 2005, Vol 81, Issue 3, p591
- ISSN
1388-6150
- Publication type
Article
- DOI
10.1007/s10973-005-0829-9